Deacidification device for hazardous waste incineration flue gas

Abstract

The invention discloses a deacidification device for hazardous waste incineration flue gas. The deacidification device comprises a deacidification box, a flue gas leading-in assembly, a positive pressure powder conveying assembly, a dust treatment assembly and a flue gas flow guide assembly. The invention relates to the technical field of hazardous waste incineration flue gas deacidification. According to the deacidification device for the hazardous waste incineration flue gas, through cooperation of the flue gas guide-in assembly and the deacidification box, the hazardous waste incineration flue gas is subjected to wet treatment, then discharged flue gas is subjected to secondary deacidification through a dry method under cooperation of the positive-pressure powder conveying assembly, white smoke is effectively eliminated, meanwhile, through arrangement of the flue gas guide-in assembly and the dust treatment assembly, the deacidification efficiency is improved, and the deacidification effect is good. According to the device, dust in the flue gas and incomplete reaction alkaline dry powder used by a dry method are intercepted, smooth emission of the hazardous waste incineration flue gas is guaranteed, intercepted objects are guided into the acid removal box again in the process, efficient utilization of resources is achieved, and meanwhile, a cyclic sustainable guarantee is provided for wet treatment of the hazardous waste incineration flue gas.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hazardous waste incineration flue gas deacidification, in particular to a hazardous waste incineration flue gas deacidification device. BACKGROUND

[0002] The hazardous waste incineration flue gas is complex in composition, containing a large amount of smoke dust and acid gases, such as hydrogen chloride and sulfur oxides. Direct emission of the acid gases can easily lead to acid rain and respiratory diseases. The traditional deacidification methods for hazardous waste incineration flue gas mainly include dry deacidification, semi-dry deacidification and wet deacidification. The principle of dry deacidification is to spray alkaline dry powder such as lime or baking soda into the flue gas, and the acid gas reacts with the alkaline powder in a gas-solid two-phase neutralization reaction. The principle of semi-dry deacidification is to atomize lime slurry into the reaction tower, and the acid gas reacts with the liquid droplets. After the water evaporates, dry salt is formed. The principle of wet deacidification is that the flue gas enters the scrubbing tower and is in countercurrent contact with the alkaline solution to produce a liquid-phase neutralization reaction.

[0003] However, the traditional dry deacidification process has a large consumption of alkaline dry powder, low resource utilization rate, and low deacidification efficiency. The nozzle in the semi-dry deacidification process is prone to blockage, and the slurry concentration and atomized particle size need to be precisely controlled, which is difficult to operate. The wet deacidification process produces white smoke, which may contain dissolved salts such as NaCl, CaSO4 and fine particulate matter, and often requires post-processing, which is a relatively cumbersome process.

[0004] Based on the above-mentioned search, it can be seen that the traditional deacidification methods for hazardous waste incineration flue gas either have low resource utilization rate, or are difficult to operate, or have a relatively cumbersome process. Therefore, a hazardous waste incineration flue gas deacidification device is proposed to achieve simple and efficient deacidification of hazardous waste incineration flue gas while ensuring efficient use of resources. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a hazardous waste incineration flue gas deacidification device, which solves the problem that the traditional deacidification methods for hazardous waste incineration flue gas cannot achieve simple and efficient deacidification of hazardous waste incineration flue gas while ensuring efficient use of resources.

[0006] To achieve the above purpose, the present application realizes the following technical scheme: a hazardous waste incineration flue gas deacidification device, comprising an acid removal tank, a flue gas introduction assembly, a positive pressure powder conveying assembly and a dust treatment assembly, the flue gas introduction assembly and the dust treatment assembly are both in communication with the acid removal tank, and the flue gas output end of the flue gas introduction assembly is in communication with the positive pressure powder conveying assembly, a flue gas flow guide assembly is fixedly installed at the top of the positive pressure powder conveying assembly, and the input end and the output end of the flue gas flow guide assembly are in communication with the output end of the positive pressure powder conveying assembly and the input end of the dust treatment assembly, respectively.

[0007] The application is further provided with: the smoke guide assembly comprises a barrel, a vertical smoke pipe is fixedly installed at the top of the inner cavity of the barrel, a smoke inlet pipe is communicated with one side of the vertical smoke pipe, one end of the smoke inlet pipe penetrates through the barrel and extends to the outside of the barrel, a motor device is fixedly installed at the bottom of the barrel, the output end of the motor device penetrates through the barrel and is fixedly installed with a rotating disc, a driving shaft is fixedly installed at the top of the rotating disc, a spiral material sheet I is sleeved and fixedly installed on the outer periphery of the driving shaft, and the outer periphery of the spiral material sheet I is matched with the inner surface of the barrel; A plurality of spoiler rods are fixedly installed at the bottom of the outer periphery of the vertical smoke pipe.

[0008] The application is further provided with: the barrel is fixedly installed at one side of the top of the acid removal tank, a square tube is communicated with the top of the acid removal tank, and the bottom of the outer periphery of the barrel is communicated with the square tube through a material passing opening. A plurality of rhombic columns are fixedly installed at the top of the rotating disc at equal intervals, and one corner of each of the plurality of rhombic columns is slidably matched with the inner surface of the barrel.

[0009] The application is further provided with: the positive pressure powder conveying assembly comprises a powder tank, an isolation plate is fixedly installed in the powder tank, a plurality of mixing pipes are communicated and fixedly installed at the bottom of the powder tank, and a positive pressure powder pneumatic conveying pipe is communicated with the outer periphery of the powder tank below the isolation plate; A plurality of discharging rods are rotatably installed at the top of the inner cavity of the powder tank at equal intervals through bearings, the bottom end of each of the discharging rods penetrates through the isolation plate and extends to the inside of the mixing pipe, a spiral material sheet II is sleeved and fixedly installed on the outer periphery of the discharging rod in the mixing pipe, and the outer periphery of the spiral material sheet II is matched with the inner surface of the mixing pipe.

[0010] The application is further provided with: the bottom end of the mixing pipe penetrates through the barrel and is fixedly connected with the barrel, the top end of the driving shaft penetrates through the powder tank and the isolation plate in sequence and is fixedly installed with a driving gear, a driven gear ring is sleeved and fixedly installed on the upper part of the outer periphery of the discharging rod, and the driving gear is engaged with the driven gear ring. A cross-shaped scraper is sleeved and fixedly installed on the outer periphery of the driving shaft, and the bottom of the cross-shaped scraper is in sliding contact with the bottom of the inner cavity of the powder tank.

[0011] The application is further provided with: the smoke guide assembly comprises a smoke collecting box, and a U-shaped backflow pipe is communicated with the top of the smoke collecting box; An inclined pipe is communicated with the outer periphery of the middle of the mixing pipe, and the top end of the inclined pipe is communicated with the inside of the smoke collecting box.

[0012] The application is further provided with: the dust treatment assembly comprises a tail gas tank, a partition plate is fixedly connected to the top of the inner cavity of the tail gas tank, an exhaust pipe is communicated with the top of the tail gas tank and located on one side of the partition plate, rotating shafts one and two are respectively installed at the inside of the tail gas tank and located on both sides of the partition plate, a impeller is fixedly installed on the outer periphery of the rotating shaft one, a plurality of filter screens are fixedly installed on the outer periphery of the rotating shaft two at equal intervals, arc-shaped blocking blocks are fixedly installed on one side of the partition plate and one side of the tail gas tank, and the arc-shaped blocking blocks are used in cooperation with the filter screens. One end of the U-shaped return pipe penetrates the tail gas tank and extends above the impeller, one end of the rotating shaft one and the rotating shaft two penetrates the tail gas tank and extends to the outside of the tail gas tank, and the rotating shaft one and the rotating shaft two are transmissionally connected through a belt pulley.

[0013] The application is further provided with: the inside of the tail gas tank is further fixedly installed with elastic sheets through fixing strips, and the elastic sheets are used in cooperation with the filter screens. A filter plate is further arranged between one side of the partition plate and one side of the tail gas tank and above the arc-shaped blocking blocks.

[0014] The application is further provided with: the tail gas tank is fixedly installed at the top middle part of the acid removal tank, and the bottom of the tail gas tank and the top of the acid removal tank are communicated through a slot, and one side of the tail gas tank is communicated with the square tube through an opening.

[0015] The application is further provided with: the other side of the top of the acid removal tank is communicated and fixedly installed with an expansion square frame.

[0016] The application provides a hazardous waste incineration flue gas deacidification device. (1) The application cooperates the smoke introduction assembly and the acid removal tank to wet-process the hazardous waste incineration flue gas, and the discharged flue gas is dry-processed for secondary deacidification under the cooperation of the positive pressure powder conveying assembly, effectively eliminating white smoke, cooperating the smoke guide assembly and the dust treatment assembly to intercept the dust and the dry-process alkali dry powder that is not completely reacted in the flue gas, ensuring the smooth discharge of the hazardous waste incineration flue gas, and re-introducing the intercepted material into the acid removal tank to realize efficient resource utilization and provide a sustainable guarantee for the wet-process of the hazardous waste incineration flue gas.

[0017] (2) The application cooperates the driving motor, the rotating disc, the rhombic column, the material passing hole and the square tube to discharge the gypsum precipitate generated in the wet-process deacidification into the acid removal tank, and cooperates the expansion square frame to provide a removal condition for the gypsum precipitate, and cooperates the driving shaft, the spiral material sheet one and the vertical smoke pipe to effectively avoid the long-term attachment of impurities in the hazardous waste incineration flue gas to the vertical smoke pipe to cause blockage.

[0018] (3) The present invention provides stable guiding conditions for the falling alkaline powder in the powder box through the cooperation of the drive shaft, mixing pipe, feeding rod, spiral material blade, drive gear and driven gear ring, so that the flue gas after wet treatment is mixed with alkaline powder through the mixing pipe to achieve dry deacidification. In addition, the positive pressure powder pneumatic conveying pipe creates a positive pressure environment in the powder box to support the accelerated discharge of the flue gas after dry treatment from the inclined pipe. The flue gas is guided to the top of the impeller through the smoke collection box and U-shaped return pipe to realize the rotation drive of the impeller and realize the effective utilization of the kinetic energy of the flue gas.

[0019] (4) The present invention achieves the rotation drive of the filter screen through the cooperation of the impeller, shaft one, belt pulley and shaft two, so as to effectively intercept impurities and unreacted alkaline powder in the flue gas. With the help of the elastic sheet, the intercepted material can be effectively shaken off into the acid removal box, so as to realize the reuse of unreacted alkaline powder. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the external structure of the present invention; Figure 2 This is a schematic diagram of the external structure of the present invention from a rear view. Figure 3 This is a schematic diagram of the internal structure of the present invention; Figure 4 This is a schematic diagram of the internal structure of the flue gas introduction component of the present invention; Figure 5 This is a schematic diagram of the internal structure of the positive pressure powder conveying assembly of the present invention; Figure 6 This is a schematic diagram showing the connection between the dust treatment component and the flue gas guiding component of the present invention; Figure 7 This is a schematic diagram showing the connection of the first rotating shaft, second rotating shaft, impeller, filter screen, and pulley structure of the present invention; Figure 8 This is a schematic diagram showing the connection of the acid removal box, square tube, extended frame, material cylinder, and exhaust gas box of the present invention.

[0021] In the picture: 1. Deacidification box; 101. Square tube; 102. Extended frame; 2. Flue gas inlet assembly; 201. Material cylinder; 202. Vertical flue pipe; 203. Flue gas inlet pipe; 204. Motor equipment; 205. Turntable; 206. Drive shaft; 207. Spiral material blade 1; 208. Baffle bar; 209. Material outlet; 2010. Rhomboid column; 3. Positive pressure powder conveying assembly; 301. Powder box; 302. Isolation plate; 303. Mixing pipe; 304. Positive pressure powder pneumatic conveying pipe; 305. Feeding rod; 306. Spiral blade II; 307. Drive gear; 308. Driven gear ring; 309. Cross scraper; 3010. Inclined pipe; 4. Dust treatment components; 401. Exhaust gas box; 402. Partition plate; 403. Exhaust pipe; 404. Shaft 1; 405. Shaft 2; 406. Impeller; 407. Filter screen; 408. Arc-shaped sealing block; 409. Belt pulley; 4010. Elastic sheet; 4011. Filter plate; 5. Smoke guide assembly; 501. Smoke collection box; 502. U-shaped return pipe. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0023] Please see Figures 1-8 This invention provides a deacidification device for hazardous waste incineration flue gas, including a deacidification box 1, a flue gas inlet component 2, a positive pressure powder conveying component 3, a dust treatment component 4, and a flue gas guiding component 5. The flue gas inlet component 2, the dust treatment component 4, and the deacidification box 1 are connected. The lime slurry inside the deacidification box 1 reacts with the hazardous waste incineration flue gas introduced by the flue gas inlet component 2 to achieve wet deacidification. The flue gas after wet deacidification rises and undergoes dry deacidification with the hydrated lime descending in the positive pressure powder conveying component 3, eliminating the influence of white smoke and further improving the degree of flue gas deacidification. The flue gas after dry deacidification carries some unreacted hydrated lime through the flue gas guiding component 5 into the dust treatment component 4, where the dust treatment component 4 intercepts solid particles and discharges them. The intercepted solid particles are shaken back into the deacidification box 1, so that the unreacted hydrated lime in the solid particles serves as a supplement to the lime slurry, ensuring efficient utilization of raw materials.

[0024] In an exemplary embodiment, the flue gas inlet assembly 2 includes a material cylinder 201, which is fixedly installed on one side of the top of the acid removal box 1. A square tube 101 is connected to the top of the acid removal box 1. The bottom of the outer periphery of the material cylinder 201 is connected to the square tube 101 through a material inlet 209. A vertical flue pipe 202 is fixedly installed on the top of the inner cavity of the material cylinder 201. A flue pipe 203 is connected to one side of the vertical flue pipe 202. One end of the flue pipe 203 passes through the material cylinder 201 and extends to the outside of the material cylinder 201. The lime slurry in the acid removal box 1 enters the material cylinder 201 through the square tube 101 and the material inlet 209. The hazardous waste incineration flue gas enters the vertical flue pipe 202 through the flue pipe 203. After the lime slurry is inserted into the bottom of the vertical flue pipe 202, the hazardous waste incineration flue gas needs to come into contact with the lime slurry before it can be discharged, thus achieving the effect of wet deacidification.

[0025] To further explain, a motor device 204 is fixedly installed at the bottom of the material cylinder 201. The output end of the motor device 204 passes through the material cylinder 201 and is fixedly installed on a turntable 205. A drive shaft 206 is fixedly installed on the top of the turntable 205. A spiral material blade 207 is sleeved and fixedly installed on the outer periphery of the drive shaft 206, and the outer periphery of the spiral material blade 207 cooperates with the inner surface of the material cylinder 201. In this embodiment, by starting the motor device 204, the motor device 204 can drive the drive shaft 206 through the turntable 205 to make the spiral material blade 207 rotate to scrape the inner wall of the vertical smoke pipe 202, so as to avoid impurities adhering and clogging the vertical smoke pipe 202.

[0026] Furthermore, several rhomboid columns 2010 are evenly fixedly installed on the top of the turntable 205, and one corner of each rhomboid column 2010 slides into contact with the inner surface of the material cylinder 201. This allows the rhomboid columns 2010 to rotate during the rotation of the turntable 205, creating a vortex at the bottom of the material cylinder 201. This causes the precipitated gypsum to approach the inner wall of the material cylinder 201, and then be squeezed through the feed inlet 209 by the rhomboid columns 2010, before entering the deacidification box 1 through the square tube 101 to accumulate. To facilitate the cleaning of the gypsum, an extended square frame 102 is connected and fixedly installed on the other side of the top of the deacidification box 1. In addition, to increase the generation of larger bubbles in the lime slurry from the hazardous waste incineration flue gas, several baffle rods 208 are evenly fixedly installed at intervals on the bottom of the outer periphery of the vertical flue 202 to disperse large bubbles and increase the contact area between the hazardous waste incineration flue gas and the lime slurry, thereby improving the quality of wet deacidification.

[0027] In an exemplary embodiment, the positive pressure powder conveying assembly 3 includes a powder box 301. An isolation plate 302 is fixedly installed inside the powder box 301. A plurality of mixing pipes 303 are connected to and fixedly installed at the bottom of the powder box 301. An inclined pipe 3010 is connected to the middle of the outer periphery of the mixing pipes 303. The bottom end of the mixing pipes 303 passes through the material cylinder 201 and is fixedly connected to the material cylinder 201. A positive pressure powder pneumatic conveying pipe 304 is connected to the outer periphery of the powder box 301 and below the isolation plate 302. The positive pressure powder pneumatic conveying pipe 304 serves as a powder pneumatic conveying device under an external positive pressure system and is used to input quicklime powder into the powder box 301 by airflow.

[0028] As a detailed explanation, the flue gas after wet desulfurization rises into the mixing pipe 303. Under the action of the positive pressure powder pneumatic conveying pipe 304, the powder box 301 not only has a positive pressure environment inside, but also the hydrated lime powder will fall through the mixing pipe 303. In this way, the falling hydrated lime powder can achieve dry desulfurization after contacting the rising flue gas. Furthermore, under the influence of the positive pressure environment of the powder box 301, the flue gas after dry desulfurization is accelerated and discharged from the mixing pipe 303 through the inclined pipe 3010.

[0029] Furthermore, to ensure the smooth descent of the hydrated lime powder and to increase the contact time between the flue gas and the hydrated lime powder, several feed rods 305 are evenly spaced and rotatably mounted on the top of the inner cavity of the powder box 301 via bearings. The bottom ends of the feed rods 305 penetrate the partition plate 302 and extend into the interior of the mixing pipe 303. Spiral feed plates 306 are sleeved and fixedly installed on the outer periphery of the feed rods 305 inside the mixing pipe 303, and the outer periphery of the spiral feed plates 306 is in contact with the mixing pipe. The inner surface of the tube 303 is used in conjunction with the drive shaft 206. The top end of the drive shaft 206 passes through the powder box 301 and the isolation plate 302 in sequence, and the drive gear 307 is fixedly installed. The upper part of the outer periphery of the feed rod 305 is fitted with and fixedly installed with a driven gear ring 308. The drive gear 307 and the driven gear ring 308 mesh with each other. The outer periphery of the drive shaft 206 is fitted with and fixedly installed with a cross scraper 309, and the bottom of the cross scraper 309 slides in contact with the bottom of the inner cavity of the powder box 301.

[0030] In use, the single power drive of the motor device 204 is used to realize the rotation of the drive gear 307. The drive gear 307 then drives the feed rod 305 through the driven gear ring 308 to rotate the spiral feed plate 306, ensuring that the hydrated lime powder in the powder box 301 can smoothly descend along the mixing pipe 303. At the same time, it prolongs the residence time of the flue gas in the mixing pipe 303, which can effectively improve the quality of dry deacidification and also prevent a large amount of hydrated lime powder from entering the inclined pipe 3010.

[0031] In an exemplary embodiment, the dust treatment assembly 4 includes an exhaust gas box 401, which is fixedly installed at the top center of the acid removal box 1. The bottom of the exhaust gas box 401 and the top of the acid removal box 1 are connected by a slot. One side of the exhaust gas box 401 is connected to a square tube 101 through an opening. A partition plate 402 is fixedly connected to the top of the inner cavity of the exhaust gas box 401. An exhaust pipe 403 is connected to the top of the exhaust gas box 401 and one side of the partition plate 402. A rotating shaft 404 and a rotating shaft 405 are rotatably installed inside the exhaust gas box 401 and on both sides of the partition plate 402, respectively. An impeller 406 is sleeved and fixedly installed on the outer periphery of the rotating shaft 404. A plurality of filter screens 407 are evenly fixedly installed on the outer periphery of the rotating shaft 405. One side of the partition plate 402 and one side of the exhaust gas box 401 are connected by a partition plate 402 and a square tube 101 through an opening. Arc-shaped sealing blocks 408 are fixedly installed on both sides. Each arc-shaped sealing block 408 is used in conjunction with several filter screens 407. A filter plate 4011 is also provided between one side of the partition plate 402 and one side of the exhaust gas box 401. The filter plate 4011 is located above the arc-shaped sealing blocks 408. The flue gas guiding assembly 5 includes a smoke collection box 501. The top end of the inclined pipe 3010 is connected to the inside of the smoke collection box 501. A U-shaped return pipe 502 is connected to the top of the smoke collection box 501. One end of the U-shaped return pipe 502 passes through the exhaust gas box 401 and extends to the top of the impeller 406. One end of the rotating shaft 1 404 and the rotating shaft 2 405 both pass through the exhaust gas box 401 and extend to the outside of the exhaust gas box 401. The rotating shaft 1 404 and the rotating shaft 2 405 are connected by a belt pulley 409.

[0032] In this embodiment, after the flue gas from the dry deacidification process enters the exhaust gas box 401, it drives the impeller 406 to rotate. Under the transmission cooperation of the first rotating shaft 404, the pulley 409 and the second rotating shaft 405, several filter screens 407 rotate between two arc-shaped blocking blocks 408. The filter screens 407, together with the filter plate 4011, intercept solid particles in the flue gas, and then the flue gas is discharged from the exhaust gas box 401 through the exhaust pipe 403.

[0033] Furthermore, the solid particles contain some unreacted quicklime. In order to make effective use of the quicklime, an elastic sheet 4010 is fixedly installed inside the exhaust gas box 401 by a fixing strip. The elastic sheet 4010 works in conjunction with the filter screen 407. When the filter screen 407 rotates, it strikes the elastic sheet 4010, shaking the intercepted solid particles on the filter screen 407 into the acid removal box 1. This enables efficient use of resources.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A deacidification device for hazardous waste incineration flue gas, characterized in that, It includes an acid removal box (1), a flue gas inlet assembly (2), a positive pressure powder conveying assembly (3), and a dust treatment assembly (4). The flue gas inlet assembly (2) and the dust treatment assembly (4) are both connected to the acid removal box (1), and the flue gas output end of the flue gas inlet assembly (2) is connected to the positive pressure powder conveying assembly (3). A flue gas guide assembly (5) is fixedly installed on the top of the positive pressure powder conveying assembly (3). The input end and the output end of the flue gas guide assembly (5) are connected to the output end of the positive pressure powder conveying assembly (3) and the input end of the dust treatment assembly (4), respectively.

2. The deacidification device for hazardous waste incineration flue gas according to claim 1, characterized in that, The flue gas inlet assembly (2) includes a material cylinder (201). A vertical smoke pipe (202) is fixedly installed at the top of the inner cavity of the material cylinder (201). A smoke inlet pipe (203) is connected to one side of the vertical smoke pipe (202). One end of the smoke inlet pipe (203) passes through the material cylinder (201) and extends to the outside of the material cylinder (201). A motor device (204) is fixedly installed at the bottom of the material cylinder (201). The output end of the motor device (204) passes through the material cylinder (201) and is fixedly installed with a turntable (205). A drive shaft (206) is fixedly installed at the top of the turntable (205). A spiral material plate (207) is sleeved and fixedly installed on the outer periphery of the drive shaft (206). The outer periphery of the spiral material plate (207) is used in conjunction with the inner surface of the material cylinder (201). Several baffle rods (208) are fixedly installed at even intervals on the bottom of the outer periphery of the vertical smoke pipe (202).

3. The deacidification device for hazardous waste incineration flue gas according to claim 2, characterized in that, The material cylinder (201) is fixedly installed on one side of the top of the acid removal box (1). The top of the acid removal box (1) is connected to a square tube (101). The bottom of the outer periphery of the material cylinder (201) is connected to the square tube (101) through a material inlet (209). The top of the turntable (205) is fixedly installed with several rhomboid columns (2010) at even intervals, and one corner edge of each rhomboid column (2010) slides in contact with the inner surface of the material cylinder (201).

4. The deacidification device for hazardous waste incineration flue gas according to claim 3, characterized in that, The positive pressure powder conveying assembly (3) includes a powder box (301), an isolation plate (302) is fixedly installed inside the powder box (301), a number of mixing pipes (303) are connected to and fixedly installed at the bottom of the powder box (301), and a positive pressure powder pneumatic conveying pipe (304) is connected to the outer periphery of the powder box (301) and below the isolation plate (302). Several feeding rods (305) are evenly spaced and rotated on the top of the inner cavity of the powder box (301) via bearings. The bottom end of the feeding rod (305) passes through the partition plate (302) and extends into the interior of the mixing tube (303). The feeding rod (305) is fitted with and fixedly installed with a spiral material plate (306) on the outer periphery inside the mixing tube (303), and the outer periphery of the spiral material plate (306) cooperates with the inner surface of the mixing tube (303).

5. The deacidification device for hazardous waste incineration flue gas according to claim 4, characterized in that, The bottom end of the mixing tube (303) passes through the material cylinder (201) and is fixedly connected to the material cylinder (201). The top end of the drive shaft (206) passes through the powder box (301) and the isolation plate (302) in sequence, and a drive gear (307) is fixedly installed thereon. A driven gear ring (308) is sleeved and fixedly installed on the upper part of the outer periphery of the feeding rod (305). The drive gear (307) meshes with the driven gear ring (308). A cross scraper (309) is sleeved and fixedly installed on the outer periphery of the drive shaft (206), and the bottom of the cross scraper (309) slides in contact with the bottom of the inner cavity of the powder box (301).

6. The deacidification device for hazardous waste incineration flue gas according to claim 4, characterized in that, The flue gas guiding assembly (5) includes a smoke collection box (501), and a U-shaped return pipe (502) is connected to the top of the smoke collection box (501). The mixing tube (303) is connected to an inclined tube (3010) at the middle of its outer periphery, and the top end of the inclined tube (3010) is connected to the inside of the smoke collection box (501).

7. The deacidification device for hazardous waste incineration flue gas according to claim 6, characterized in that, The dust treatment component (4) includes an exhaust gas box (401). A partition plate (402) is fixedly connected to the top of the inner cavity of the exhaust gas box (401). An exhaust pipe (403) is connected to the top of the exhaust gas box (401) and one side of the partition plate (402). A rotating shaft one (404) and a rotating shaft two (405) are rotatably installed inside the exhaust gas box (401) and on both sides of the partition plate (402). An impeller (406) is sleeved and fixedly installed on the outer periphery of the rotating shaft one (404). Several filters (407) are evenly fixedly installed on the outer periphery of the rotating shaft two (405). An arc-shaped sealing block (408) is fixedly installed on one side of the partition plate (402) and one side of the exhaust gas box (401). Both arc-shaped sealing blocks (408) are used in conjunction with several filters (407). One end of the U-shaped return pipe (502) passes through the exhaust gas box (401) and extends above the impeller (406). One end of the rotating shaft one (404) and the rotating shaft two (405) both pass through the exhaust gas box (401) and extend to the outside of the exhaust gas box (401). The rotating shaft one (404) and the rotating shaft two (405) are connected by a belt pulley (409).

8. The deacidification device for hazardous waste incineration flue gas according to claim 7, characterized in that, The exhaust gas box (401) is also equipped with an elastic sheet (4010) by means of a fixing strip. The elastic sheet (4010) is used in conjunction with the filter screen (407). A filter plate (4011) is also provided between one side of the partition plate (402) and one side of the exhaust gas box (401), and the filter plate (4011) is positioned above the arc-shaped sealing block (408).

9. The deacidification device for hazardous waste incineration flue gas according to claim 7, characterized in that, The exhaust gas box (401) is fixedly installed at the top center of the acid removal box (1), and the bottom of the exhaust gas box (401) and the top of the acid removal box (1) are connected by a slot. One side of the exhaust gas box (401) is connected to the square tube (101) through an opening.

10. The deacidification device for hazardous waste incineration flue gas according to claim 1, characterized in that, An extension frame (102) is connected to and fixedly installed on the other side of the top of the acid removal box (1).

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